Question 10 of 30
If there has been a fire in a closed unventilated compartment it may be unsafe to enter because of
A
excess hydrogen
B
unburned carbon particles
C
excess nitrogen
D
a lack of oxygen
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Answer & Explanation
The correct answer is Option D: a lack of oxygen.
Fires consume oxygen rapidly, and the combustion products often include carbon monoxide and other toxic gases. An unventilated space post-fire is almost certainly oxygen-deficient.